The rubber hand illusion depends on a congruent mapping between real and artificial fingers

The rubber hand illusion (RHI), in which a visible artificial hand is touched (or moves) synchronously with the participant's unseen own hand, indicates that body representations can undergo rapid changes. While several constraints for this illusion have been described, some reports highlight a remarkable flexibility of body representations, even contradicting a priori assumptions regarding body appearance and anatomy (e.g., the subjective embodiment of a third arm).     

Einsatz von Bupropion bei älteren Patienten

Die chronische bipolare Depression bei ?lteren Menschen ist eine klinische Herausforderung und erfordert unter Umst?nden, wie der vorliegende Fallbericht zeigt, Behandlungswege, die von Leitlinien nicht unbedingt abgedeckt werden.     

Wayfinding behavior and spatial knowledge of adults and children in a virtual environment: The role of landmarks

This study investigated the effect of different organizations of landmark-location pairings as fine-space information on wayfinding behavior and spatial knowledge on a total of 90 participants: 30 second graders, 30 sixth graders, and 30 adults. All participants had to find their way to a goal in a virtual environment with either randomized or categorical landmarks, or without any landmarks. Thereafter, they had to find the shortest way from the start position to the goal in two consecutive trials (wayfinding performance), and they had to solve a number of spatial knowledge tasks. The results showed that independent of their categorical function, the existence of landmarks influenced the way-finding performance of adults and children in the same way. Whereas the presence of landmarks had no effect on spatial survey knowledge, landmark knowledge itself was influenced by the categorical function of the landmarks presented. Moreover, second graders showed limited achievement compared to adults independent of the existence of landmarks. The main results implicate firstly that children at school age indeed are able to use landmark-location pairings as fine-space information like adults during learning an unknown environmental space, and secondly that a dissociation between wayfinding behavior and spatial knowledge might exist.     

The role of key features in predator recognition by untrained birds

The most important role in the recognition and categorization of predators (as well as other animals) is usually attributed to so-called key features. Under laboratory conditions, we tested the role of yellow eyes (specific for the genus Accipiter in European raptors) and hooked beak (common for all European birds of prey) in the recognition of the sparrowhawk (Accipiter nisus) by untrained great tits (Parus major) caught in the wild. Using wooden dummies, we interchanged either one of these potential key features or the body of the sparrowhawk (predator) and domestic pigeon (harmless bird). The tested tits showed three types of behaviour in the presence of the dummies: fear, interest without fear, and lack of interest. Eye interchange lowered fear of the sparrowhawk, but did not cause fear of the pigeon. Beak interchange did not lower fear of the sparrowhawk. Eye interchange caused increased interest in both species. Thus, a specific sparrowhawk feature is necessary for correct sparrowhawk dummy recognition but a general raptor feature is not. On the other hand, a specific sparrowhawk feature on a pigeon dummy is not enough to prompt sparrowhawk recognition. Thus, key features play an important, but not exclusive, role in predator recognition. An increased interest in some of the modified dummies implies that the tits have a general concept of a sparrowhawk. The individual variability in behaviour of tits is discussed.     

Processes of religious individualisation: stocktaking and issues for the future

Abstract

The paper spells out implications of a perspective on religious individualisation that is both comparative and analytical and discusses the various issues that this line of research has to confront. Arguing against notions of modern Western exceptionalism, it points to the selectivity of Western forms of (religious) individualisation and makes a case for the inclusion of additional forms of articulating individual agency and ‘selfhood'. The paper takes individualisation as an inter-subjective, social phenomenon and connects it to the concept of social imaginaries. Opposing standard concepts of modernisation the paper nevertheless brings processuality centre stage, emphasising contingency. The paper discusses the possibility of the convergence of contextual developmental trends and the question of transculturality of notions of self and agency. With reference to the dimension of critique included in visions of religious individualisation, the paper finally points to the effects processes of religious individualisation can have on human actors within, and beyond, the realm of spirituality, including the recognition of subjectivities and the strengthening of actors’ resilience.     

A kestrel without hooked beak and talons is not a kestrel for the red-backed shrike (Lanius collurio)

Animal Cognition - Birds are strongly motivated to recognize various predators to secure survival and reproductive success. Thus, predator recognition provides a useful tool for the investigation...     

The noosphere vision of pierre teilhard de chardin and Vladimir I. Vernadsky in the perspective of information and of world‐wide communication 1

The noosphere vision of the two great natural scientists and thinkers Teilhard de Chardin and V. 1. Vernadsky is presented critically. Their basic ideas are discussed from the viewpoint of present‐day insights in natural science and of the world‐wide information and communication technology. To date very little has become known about their mutual influence on each other. It is advocated that the development of a noosphere can be supported by the networking and globalization of information and communication techniques. The noosphere is a sphere of human mind and of work, but it must not be identified with the modern technological trend that is changing all sectors of our life. A reference is made to Teilhard de Chardin's warnings against individualism, nationalism and racism, as well as fascism and Stalinism as seductive erroneous developments. The fundamentally teleological vision of T. de Chardin is contrasted in this paper with the idea of creativity in nature and in man. Delimiting conditions, such as structure, information, and at the level of society, the free will of man who has become aware of himself—humanistic values, are considered. All of them operate to limit the number of possibilities for development that are derived from the creativity of nature and man. Thus, new possibilities for development emerge at a higher level. The utilization of technology must be really oriented to human beings among human beings. Only with a strong internal determination of the social processes by understanding the genuine existence of man as man will it be possible to master the ambivalence of the technological effects and to come closer towards a society with deepened human information and communication.

Klaus Fuchs‐Kittowski, born in 1934, is Professor of Informationprocessing. He was head of the Division of Systems Design and Automated Information Processing at the Department of Theory and Organization of Science of Humboldt University Berlin. He was associated with the research at the International Institute for Systems Analysis (IIASA) in Laxenburg, Austria. At present he works as Visiting Professor at the Department of Informatics of the University of Hamburg, and at the Beriin College of Technology and Economics he has a teaching assignment in Economy Informatics. He is also an associated member of the Johns Hopkins University, Baltimore, U.S.A.

Peter Krüger, born in 1934, Dr. rer nat, Dipl. Mineraloge worked at the Bergakademie Freiberg/Sachsen from 1958 to 1961 and from 1961 to 1985 in the Central Geological Institute Berlin. From 1985 to 1992 he worked as historian of science at the Division of History of Science at the Department of Theory and Organization of Science of Humboldt University Berlin. His special fields are history of geology, Russian‐German scientific connections in the 19th and 20th century and unpublished studies of Marx about geology, mineralogy and agrochemistry.